TechniFul

Whenever a kernel update is installed, your system adds an entry into GRUB. And while booting you can see a very long list, depending on how many updates you have installed. Here is a simple way to clean the GRUB.

Open Synaptics package manager.
Remove "linux-image-2.6.xxxx" and "linux-headers-2.6.xxxx" corresponding to old kernel images.
Update the grub using: "update-grub"

If you wish to set a background image for your GRUB, then goto "/etc/grub.d/" and open the theme file(debian_theme) and set "use_bg=false" to "true". Change the WALLPAPER, to point to the desired image(Better use .png file).

To apply the changes to the grub: "update-grub"

Today when I tried to download source-code of an application from a repository on googlecode, an error saying "could not connect to server xxxx.googlecode.com" occurred. I thought the repository might have been down and not available for download. Then I tried the same URL in web browser and it worked.
On searching for a while, I found that this problem is created by proxy settings. SVN needs the proxy settings, apart from that you applied system-wide settings. Then I came to know a solution which worked perfectly. Here it is:

svn --config-option servers:global:http-proxy-host=MY_PROXY_HOST --config-option servers:global:http-proxy-port=MY_PROXY_PORT checkout http://xxxx.googlecode.com/yyyyy/

If the proxy server needs authentication, then try this:

svn --config-option servers:global:http-proxy-host=MY_PROXY_HOST --config-option servers:global:http-proxy-port=MY_PROXY_PORT --config-option servers:global:http-proxy-username=USERNAME --config-option servers:global:http-proxy-password=PASSWORD checkout http://xxxx.googlecode.com/yyyyy/

For various available options:

http://svnbook.red-bean.com/en/1.1/ch07.html#svn-ch-7-sect-1.3.1

Errors on the project build path when using Eclipse
When I debug the framework source using Eclipse, there are some errors on the project build path.
Error messages I saw are the following :

Project 'Android' is missing required library: 'out/target/common/obj/JAVA_LIBRARIES/google-common_intermediates/javalib.jar'
Project 'Android' is missing required library: 'out/target/common/obj/JAVA_LIBRARIES/gsf-client_intermediates/javalib.jar'

Solution:
Goto Project>Properties and libraries section and edit first one to

"out/target/common/obj/JAVA_LIBRARIES/android-common_intermediates/javalib.jar"

and remove second one.

Missing required library when import the android source 4.0 to Eclipse
After this, the build path errors were gone, but I got about 200 errors referring to missing types. This could only be another classpath problem for Eclipse. Here are the extra libraries, that we have to add to the .classpath file:

<classpathentry kind="lib" path="out/target/common/obj/JAVA_LIBRARIES/android-support-v13_intermediates/javalib.jar"/>
<classpathentry kind="lib" path="out/target/common/obj/JAVA_LIBRARIES/filterfw_intermediates/classes-jarjar.jar"/>

or add these two files as externals jars in the above mentioned area, i.e., libraries section in Project>Properties

Hope this solves your problem...

This problem can be occurred at two instances.
1. Fresh installation:

1. Download the driver from nVidia website
2. Copy the file to the disk. (It looks like "NVIDIA-Linux-x86_64-319.17.run", depends on your version)
3. Now just type the following command from terminal:
sudo sh ./NVIDIA-Linux-x86_64-319.17.run
4. Follow the on-screen instructions and finally reboot.

2. Problem after upgrade:

1. Login into command prompt
2. Run the following command:
sudo sh ./NVIDIA-Linux-x86_64-319.17.run
3. It will ask to delete previous installation. Accept all the prompts and also the one to edit xconf file.
4. Finally it will reboot and system boots normally.

After successful boot, you can configure your driver in the System>Preferences section.

Other work-arounds:
1. When prompted the low graphics mode, select the "Restart X" option. This will work in some cases. But every time you boot, perform the same.
2. Also try blacklisting "nouveau" (if you find 'nouveau' by running the command 'lsmod'). To do this, type the following command:

sudo gedit /etc/modprobe.d/blacklist.conf

This will open a document. Add this line at the bottom:

blacklist nouveau

3. Reboot to get some relief.

To set the JVM heap size, compile the program normally.
For example, consider Runtime.java program.

Compilation: javac Runtime.java

Now, to set minimum heap size(let, 16 MB) required by JVM, run the program as follows :

java -Xms16m Runtime

We can also restrict maximum size(let 512 MB) utilized by JVM:

java -Xmx512m Runtime

Both these options can also be combined to specify upper and lower bounds of JVM heap size:

java -Xms16m -Xmx512m Runtime

Now you can run a program that requires huge computational space.

Looking for a app can do your work better with little/no effort, then here it is.

Fotor is the best all-in-one photo editing application!

Perfectly combine the windows 8 user experience with cutting-edge tools including Basic Editing Tools, Brilliant Visual Effects, Frames, 1-Tap Enhance, Collage, Text, Tilt Shift and Raw Converter, all bundled together in one powerful package!

Fotor Windows 8 app - photo editing tool

Features:

Collage : Enjoy the freedom to arrange your pictures however you want with three different modes of collage: Template Collage, Photo Stitching and Shuffle Collage.
Add Text : Input plain text or choose a stylish text template, personalize your photos by adding your own commentary, thoughts and messages for others to see, or just add notes to help you remember.
Raw Converter : RAW converter with tone mapping supports over 100 camera RAW formats. Import the RAW files and Fotor will take care of the rest.
Powerful Editing : Fotor contains some of the most powerful and easy to use photography editing tools for adjusting brightness, contrast, saturation, sharpen/blur, temperature, tint, cropping, flipping and rotation etc.
Effects & Frames : Stretch your creativity further with Fotor's huge palette of Effects designed with input from experienced graphic designers and photographers. Fotor provides over 60 effects in various categories, including Classic, Lomo, B & W, Art and Vignettes, plus choose from 23 different styles of frames!
1-Tap Enhance : 1-Tap Enhance quickly transforms "dull" or "bad" photos with a pixel by pixel enhancement, all with only one touch. Analyzing brightness, contrast, saturation and exposure value, Fotor optimizes the source image to become an even more amazing photo!
Tilt Shift : Tilt Shift gives your images the depth-of-field and other visual effects normally seen only on professional grade DSLR cameras. Magically unleash your creative inspiration, while using a mix of clear focus and selective blurring to create magnificent photos.
Scene Function : This function allows you to select the “Scene” in order to adjust to almost any conditions of your environment while taking a photo, and it will restore its true colors. You can also select One-Tap Enhance to quickly beautify your photos.
Correction Feature : The new crop feature helps you straighten the picture on a pixel-by-pixel basis.
Printing Features : You can now connect to the printer through the right side of the Windows 8 device, choose the print size you need, and then print your work. You can also use the sliding menu or click the right button that appears below, then click “Print” in the accessibility panel and print the photos.
Image Stitching storage changes : We offer three volume sizes for the image mosaic storage, respectively, corresponding to print, greeting cards and sharing purposes. According to the transverse the stitching and longitudinal stitching the smallest aspect ratio picture storage.

To install it click here or search it in Windows Store.

I recently found this great app, really superb. Give it a try. Here is the official description:
Meet Fresh Paint – a delightfully realistic and fun painting application for you and your family.
Fresh Paint is an easy-to-use, free app that includes oil paint and all the tools you need to paint.
Whether you are an aspiring artist, parent or child (or child at heart), Fresh Paint will help you unleash your inner creativity.
We believe that brilliant, creative ideas can come from anyone, anytime. It’s time to set your creativity free.
Welcome to Fresh Paint – the canvas for your big ideas.

Features

Experience highly realistic oil paint. It works just like real oil on a canvas, but just a little easier.
Paint without the mess, clean-up and costly supplies.
Help your kids be creative and explore their imagination.
Blend and mix paints to get just the colour you want.
Turn your photos into paintings with Fresh Paint. Import a photo, and then just brush and blend the colours to transform your picture into a beautiful oil painting.
Purchase painting templates to help you improve your skill, or purchase colouring pages to help your kids explore their imagination.
Choose from different brushes and change your brush size.
Erase paint with the eraser and correct any mistakes with the Undo button.
Click the Fan button to instantly dry all the paint on your canvas.
Paint in the way that is most natural for you. Get hands-on and finger paint, use a stylus or even a mouse or purchase a capacitive paint brush and paint.
Easily share your paintings with people you care about. Just swipe from the right edge of the screen and tap “Share.”
More than just a digital painting program; Fresh Paint helps you bring your imagination to life.
Now available – Disney•Pixar Finding Nemo Pack!

I find it difficult to paint using mouse(may be need little more experience), but really impressive with trackpad.
To install it click here or search it in Windows Store.